Great concept! However like many zettelkasten implementations it gives the user too much freedom imo. To me zettelkasten are most useful because of their limitations, like restricting the size of each note, limiting how many notes you can see at a time, or limiting how fast you can traverse through notes. I think it's more important to be able to hold the overall structure of notes in your mind, which zettelkasten facilitates by intentionally making everything harder to do.
Some nice UI decisions (dragging hyperlinks to spawn new nodes), but overall it seems like an art project (i.e. how it started) with unclear practical advantage over a more straightforward "second brain" like Obsidian, or established AI/data workflow tools.
https://www.catb.org/esr/jargon/html/K/kook.html
Do you mean the system described and developed is based on things that aren't real?